CRYSTAL-TO LVCMOS/LVTTL FREQUENCY SYNTHESIZER
Integrated Circuit Systems, Inc.
ICS840002I-01
FEMTOCLOCKS™ CRYSTAL-TOLVCMOS/LVTTL FREQUENCY SYNTHESIZER
FEATURES
• Two...
Description
Integrated Circuit Systems, Inc.
ICS840002I-01
FEMTOCLOCKS™ CRYSTAL-TOLVCMOS/LVTTL FREQUENCY SYNTHESIZER
FEATURES
Two LVCMOS/LVTTL outputs @ 3.3V, 17Ω typical output impedance Selectable crystal oscillator interface or LVCMOS single-ended input Supports the following output frequencies: 156.25MHz, 125MHz and 62.5MHz Output frequency range: 56MHz - 175MHz VCO range: 560MHz - 700MHz Output skew: 12ps (maximum) RMS phase jitter at 156.25MHz (1.875MHz - 20MHz): 0.47ps (typical) Phase noise: Offset Noise Power 100Hz ............... -97.4 dBc/Hz 1KHz .............. -120.2 dBc/Hz 10KHz .............. -127.6 dBc/Hz 100KHz .............. -126.1 dBc/Hz Power supply modes: Core/Output 3.3V/3.3V 3.3V/2.5V 2.5V/2.5V -40°C to 85°C ambient operating temperature Lead-Free package RoHS compliant Output Frequency (25MHz Ref.) 156.25 125 62.5 125
GENERAL DESCRIPTION
The ICS840002I-01 is a 2 output LVCMOS/LVTTL Synthesizer optimized to generate Ethernet HiPerClockS™ reference clock frequencies and is a member of the HiPerClocksTM family of high performance clock solutions from ICS. Using a 25MHz 18pF parallel resonant crystal, the following frequencies can be generated based on the 2 frequency select pins (F_SEL1:0): 156.25MHz, 125MHz, and 62.5MHz. The ICS840002I-01 uses ICS’ 3rd generation low phase noise VCO technology and can www.DataSheet4U.com achieve 1ps or lower typical random rms phase jitter, easily meeting Ethernet jitter requirements. The ICS840002I-01 is package...
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